Thank you for the answers KingDaniel.
The novels will very probably have a different version of the cause to that in Star Trek Online. For starters, the novelvese Iconians are totally different to the STO ones.
Are there any modern Iconians in the novelverse? The last I remember are the technologically-devolved descendants in Devils Heart.
So the STO Iconians can be a mad offshoot.
Along similar lines of Progenitors, some of who died out, some became Preservers, some froze themselves, some evolved....
STXI was the most successful Star Trek movie ever. They're not going to pretend it didn't happen. That would be bad buisness.

We ARE stuck with it.

I have to brush up on the Romulus destruction back-story in the movie, for I cannot remember there being said much. So, for all we (alright, I) know Spock did blow up Romulus.